CN102414461A - 转子组件 - Google Patents
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
- F01D25/162—Bearing supports
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
- F16C25/06—Ball or roller bearings
- F16C25/08—Ball or roller bearings self-adjusting
- F16C25/083—Ball or roller bearings self-adjusting with resilient means acting axially on a race ring to preload the bearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
- F04D29/0462—Bearing cartridges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
- F04D29/0563—Bearings cartridges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
- F04D29/059—Roller bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
- F16C19/55—Systems consisting of a plurality of bearings with rolling friction with intermediate floating or independently-driven rings rotating at reduced speed or with other differential ball or roller bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
- F16C25/06—Ball or roller bearings
- F16C25/08—Ball or roller bearings self-adjusting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/07—Fixing them on the shaft or housing with interposition of an element
- F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C39/00—Relieving load on bearings
- F16C39/02—Relieving load on bearings using mechanical means
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- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/44—Centrifugal pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2380/00—Electrical apparatus
- F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
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Abstract
转子组件(1)包括轴(2),叶轮(3)、转子芯部(4)和轴承筒(5)被安装到该轴(2)。轴承筒(5)被固定在叶轮(3)和转子芯部(4)之间,且该轴承筒(5)包括一对轴承(7,8),施加预负载到每个轴承(7,8)的弹簧(10)和围绕轴承(7,8)的套筒(11)。
Description
技术领域
本发明涉及了一种用于高速压缩机的转子组件。
背景技术
许多高速压缩机的转子组件包括轴,该轴通过一对轴承被安装到外壳,每个轴承位于轴的相对端。将轴承提供在轴的相对端提供了良好的稳定性。然而,两个轴承之间穿过外壳的路径是相当长的且通常横穿压缩机的几个不同的部件。由于尺寸和形位公差,其通常难以确保转子组件可精确地在外壳内对准。另外,对于高速压缩机,轴承被理想地预负载以防止打滑。然而,由于与轴承之间的路径相关联的公差的累积,其将难以确保两个轴承被预负载防止打滑的力而不会过量加载,这将导致差的轴承性能。
发明内容
在第一方面,本发明提供了转子组件,该转子组件包括轴,叶轮、转子芯部和轴承筒被安装到该轴,轴承筒被安装在叶轮和转子芯部之间,该轴承筒包括一对轴承,施加预负载到每个轴承的弹簧和围绕轴承的套筒。
转子组件因此由两个预负载的轴承支撑。该轴承被理想地隔开已定的量,且弹簧具有预定的弹簧系数。因此,两个轴承被相同的、良好定义的力预负载。通过用阻止打滑而不过量的力预负载轴承,轴承的寿命被增加。
轴承筒提供了单个紧固件,转子组件可通过它被固定到外壳,框架等等。提供单个紧固件,转子组件的固定比具有位于轴相对端的轴承的转子组件更简单且成本更低。
套筒用于将两个轴承对准,特别是轴承的外圈。因此,当转子组件被固定到外壳时,这确保在外壳内的轴的对准。套筒还用作轴承的散热器,由此延长轴承的寿命。
在将叶轮和转子芯部安装到轴承的相对侧时,转子组件的紧凑设计被实验。而且,在装入压缩机内前,转子组件可作为整体单元被动态地平衡。这与必须在压缩机内组装且由此不能作为完整单元被动态地平衡的其它转子组件成对比。此外,在叶轮和转子芯部位于轴承筒的相对侧的情况下,两个轴承的径向负载可更均衡。实际上,在这点上,转子组件的质量中心优选位于轴承筒内的某一点。
套筒优选具有与轴的热膨胀系数大致匹配的热膨胀系数。因此,轴和套筒的热膨胀系数不会不利地影响轴承的负载。另外,套筒可由电绝缘的材料形成。于是这具有套筒不易在其它情况下使用转子组件期间可能发生的感应加热的影响的优点。由于套筒持续用作用于轴承的有效的散热器,转子组件由此理想地适合于高速应用。此外,套筒可由非磁性材料形成。所以,套筒不会对转子芯部和定子的磁性回路呈现局部短路。
有利地,转子组件包括间隔件,该间隔件围绕着轴,分隔两个轴承且有助于轴的刚性。因此,对于具有非常高速度的转子组件,更薄的,更小规模的轴承可被使用。此外,间隔件确保轴承被隔开预定量,以确保良好定义的轴承预负载。为了最小化由热膨胀引起的轴承筒的任何可能故障,轴承和间隔件优选具有与轴和套筒的热膨胀系数大致匹配的热膨胀系数。
轴软磁材料形成是有利的。因此,轴降低了磁性回路的磁阻。
轴承可通过位于间隔件和套筒之间的一个或多个弹簧预负载。然而,环绕间隔件的单个螺旋弹簧被优选地使用。这于是使得装配转子组件成本更低且更简单。
当转子组件在使用中时,叶轮的旋转可导致邻近于叶轮的轴承筒的端部的压力降低。压力的降低可导致携带灰尘的流体被经由轴承里的环形间隙抽吸通过轴承筒。转子组件因此优选包括防尘盖,该防尘盖覆盖邻近于转子芯部的轴承中的环形间隙。例如,防尘盖可被固定到轴并邻近于所述轴承,且包括从轴向外径向延伸以覆盖环形间隙的凸缘。因此,随着流体被抽吸朝向轴承筒,流体中携带的灰尘被阻挡进入轴承。
在第二方面,本发明提供了一种转子组件,该转子组件包括被安装到轴的轴承筒,该轴承筒包括一对轴承,施加预负载到每个轴承的弹簧和围绕轴承的套筒,其中,套筒具有与轴的热膨胀系数大致匹配的热膨胀系数
轴承筒提供了单个紧固件,转子组件可通过它被固定到外壳,框架等等。两个隔开的轴承的供应提供了相当良好的稳定性,同时套筒用于对准轴承并充当散热器。由于套筒和轴是热匹配的,轴和套筒的热膨胀系数在随后使用期间没有不利地影响轴承的负载。
附图说明
为了本发明可更容易的被理解,现在将参考附图仅通过举例的方式描述本发明的实施例,在附图中:
图1是根据本发明的转子组件的剖视图;
具体实施方式
图1中的转子组件1包括轴2,叶轮3,转子芯部4,轴承筒5和防尘盖6被安装到该轴2。
叶轮3被安装到轴2的第一端。在图1中示出的叶轮3是离心式叶轮。然而,叶轮的其他类型可根据转子组件1的预期应用而被同样地使用。
转子芯部4被安装到轴2的第二端。转子芯部4是由硬磁或软磁材料形成。轴2是由软磁材料形成,其于是降低了磁性回路的磁阻。不过,非磁性材料可被替代地用于轴2。
轴承筒5位于叶轮3和转子芯部4之间。轴承筒5包括一对轴承7,8,间隔件9,弹簧10和套筒11。
轴承7,8是完全相同的,每个轴承包括内圈12,支撑多个球形轴承14的笼13,外圈15和一对在轴承7,8的相对端被固定到外圈15的遮蔽件16。
间隔件9是圆柱形的,用于隔开两个轴承7,8预定的量。除了隔开两个轴承7,8之外,间隔件9有助于轴2的刚性。因此,间隔件9的材料和厚度可以被选择以达到期望的轴刚性。不管上述优点,间隔件9可从轴承筒5省略掉。于是,在轴承7,8之间的预定间隔可在装配轴承筒5期间通过替代装置来实现。
弹簧10是螺旋弹簧,该弹簧环围绕间隔件9并将力应用到轴承7,8的外圈15。由于间隔件9具有预定长度,弹簧10具有预定弹簧系数,每个轴承7,8由相同的良好定义的力预负载。在图1中所示的特定实施例中,弹簧10明显比轴承7,8的外圈15厚。为了将弹簧10的力沿轴向方向传递到外圈15,圆形垫片17被设置在弹簧10和每个外圈15之间。
套筒11围绕着两个轴承7,8并被固定到两个轴承7,8。套筒11用于三个目的。第一,套筒11提供了外表面,轴承筒5在该外表面上可被固定(例如压接或粘合)到外壳,框架,等等。第二,套筒11用作轴承7,8的散热器。由于由轴承7,8产生的热量被套筒11带走,轴承7,8的寿命被延长。第三,如现在将描述,套筒11用于对准轴承7,8。
在将轴承7,8安装到轴2过程中,轴承7,8的内圈12被同轴对准。尽管内圈12被对准,外圈15没有对准。这是因为每个轴承7,8的外圈15具有相对于内圈12小程度的游隙。当外圈15被预负载时,由弹簧10施加的力通常并不一致地分布在每个外圈15的周围。所以,外圈15通常不会对准。特别地,外圈的纵向轴线可相对于另一个外圈的纵向轴线径向移位和/或倾斜。如果将套筒11从轴承筒5省略掉,转子组件1经由轴承7,8被安装到外壳,任何外圈15的未对准将导致在外壳内的轴2的未对准。这又将对转子芯部4相对于定子的对准,以及叶轮相对于保持在外壳内的扩散器和保护罩的对准产生严重后果。在将套筒11固定在两个轴承的套筒7,8的外圈15上面时,该外圈15被同轴对准。因此,当轴承筒5被安装到外壳时,确保外壳内的轴2正确对准。
当转子组件1在使用中时,轴承筒5的套筒11被暴露到来自转子芯部4的和/或用于驱动转子芯部4的定子的磁场。为了使得套筒11不经受感应加热,且不呈现到转子芯部4和定子的磁性回路的局部短路,套筒11由非磁性、电绝缘材料形成。然而,存在磁性和/或导电材料可被使用的应用,例如如果转子芯部4和/或定子的磁场强度是相当弱的,如果转子组件1在相当低的速度下旋转,如果轴承筒5从转子芯部4被隔开充分远,或如果套筒11被暴露到磁场的部分相对较小,。
轴承筒5的部件(即轴承7,8,间隔件9,弹簧10和套筒11)具有与轴2的热膨胀系数大致匹配的热膨胀系数。这于是防止轴承筒5由不均匀的热膨胀系数引起的故障。不过,一个或多个部件的热量的匹配可能是没必要的,特别是如果转子组件1的操作温度范围是相对较小的。由于轴承7,8被固定到轴2和套筒11,轴2和套筒11的不均匀的热膨胀将导致每个轴承7,8的内圈12相对于外圈15移动。这又可导致轴承7,8的预负载的不利改变。通过确保至少轴2和套筒11的热匹配,预负载中的不利改变可被避免。
防尘盖6可在邻近于靠近的转子芯部的轴承筒5的端部处被固定到轴2。防尘盖6包括具有形成在一端的凸缘19的轴环18。轴环18被固定到轴2以使凸缘19邻接轴承7的内圈12。凸缘19从轴2向外径向延伸以覆盖在内圈12和遮蔽件16之间的轴承7中的环形间隙,现将对其优点进行描述。
当转子组件1在使用中时,叶轮3的旋转导致叶轮3下方的压力降低。然而,在转子芯部4的压力未改变。因此,压力梯度沿着轴承筒5的长度被建立,其促使流体流动通过轴承筒5。流体从在与转子芯部4相邻的轴承7的内圈12和遮蔽件16之间的间隙进入轴承筒5。流体携带的灰尘有可能通过轴承7捕获,因此损害性能且最纵导致轴承7的过早损坏。防尘盖6通过强迫流体遵循绕凸缘19的回旋路径行进而减少进入轴承7的灰尘量。该回旋路径导致大部分灰尘从轴承7径向向外抛出。附加地,凸缘19和轴承7之间的间距是充分小的,以致当凸缘19相对于遮蔽件16旋转时,压力降低的区域产生在凸缘19和轴承7之间。因此,跨轴承筒5的压力梯度,由此通过轴承筒5的流体流动被减少。在减少进入轴承7的灰尘量的同时,轴承的寿命被延长,特别当转子组件1在携带灰尘的环境中被使用时。
虽然每个轴承7,8设置有一对遮蔽件16,轴承筒5的内部没有直接暴露于外部环境。因此,在与间隔件9和弹簧10相邻的每个轴承7,8的端部处的遮蔽件16可被省略掉。不过,每个遮蔽件16都提供了对通过轴承筒5的流体流动的阻力,且由此遮蔽件在每个轴承7,8的任一端的供应都有助于最小化进入轴承筒5的灰尘量。
在上述实施例中,遮蔽件16被固定到每个轴承7,8的外圈15。防尘盖6因此覆盖形成在邻近于转子芯部4的轴承7的内圈12和遮蔽件16之间的环形间隙。然而,轴承7的替代设计是可能的,其中,遮蔽件16被密封到内圈12或完全省略掉。结果,环形间隙可替代地存在于遮蔽件16和外圈15之间或内圈12和外圈15之间。如果轴承的替代设计被使用,凸缘19的直径可被调整以使得防尘盖6继续覆盖任何间隙。
本发明的转子组件1提供了超过已知转子组件(特别是轴被端部轴承支撑的那些)的几个优点。在本发明的转子组件1中,轴2被两个轴承7,8支撑,该轴承7,8被间隔开以提供良好的稳定性。由于轴2在其中心处而不是端部处的支撑导致的稳定性的任意降低可由间隔件9补偿,其有助于轴的刚性。转子组件1的轴承7,8被相同地、良好定义的力预负载,因此延长了轴承的寿命。这与轴由端部轴承支撑的转子组件相反,在轴由端部轴承支撑的转子组件中与轴承有关的公差的累积使得精确的预负载是很困难的。转子组件1的进一步的优点在于套筒11的供应,其用于轴承7,8的对准。因此,当转子组件1被固定到外壳时,能确保在外壳内的轴2的对准。再次,这与轴由端部轴承支撑的转子组件相反,在轴由端部轴承支撑的转子组件中公差的积累使得在外壳内的轴的精确对准是很困难的。除了对准轴承7,8外,套筒11充当用于轴承7,8的散热器,由此进一步延长了它们的寿命。轴承筒5提供了单个紧固件,转子组件1可通过它被固定到外壳。因此,转子组件1固定比具有端部轴承的转子组件更简单且成本更低。在将叶轮和转子芯部在轴承筒的相对侧上安装到轴时,本发明提供了转子组件的紧凑的设计。而且,由于两个质量位于轴承筒的相对侧,轴承的径向负载可更均衡,由此延长轴承寿命。这与轴承通常承受不同的径向负载的其它转子组件成对比。最后,在包含到压缩机内前,本发明的轴承组件1可作为完整单元(即轴,叶轮,转子芯部和轴承筒)而被动态地平衡。这与必须在压缩机内组装且由此不能作为完整单元被动态地平衡的其它转子组件成对比。
Claims (16)
1.一种转子组件,包括轴,叶轮、转子芯部和轴承筒被安装到该轴,轴承筒被安装在叶轮和转子芯部之间,该轴承筒包括一对轴承,施加预负载到每个轴承的弹簧和围绕轴承的套筒。
2.如权利要求1所述的转子组件,其中,套筒具有与轴的热膨胀系数大致匹配的热膨胀系数。
3.如权利要求1或2所述的转子组件,其中,套筒由电绝缘材料形成。
4.如上述权利要求中任一项所述的转子组件,其中,套筒由非磁性材料形成。
5.如上述权利要求中任一项所述的转子组件,其中,转子组件的质量中心位于轴承筒内。
6.如上述权利要求中任一项所述的转子组件,其中,转子组件包括间隔件,该间隔件围绕轴,分隔两个轴承并有助于轴的刚性。
7.如权利要求6所述的转子组件,其中,轴承和间隔件具有与轴的热膨胀系数大致匹配的热膨胀系数。
8.如上述权利要求中任一项所述的转子组件,其中,轴由软磁材料形成。
9.如上述权利要求中任一项所述的转子组件,其中,转子组件包括防尘盖,该防尘盖覆盖邻近于转子芯部的轴承中的环形间隙,该防尘盖被固定到轴,且该防尘盖包括从轴向外径向延伸以覆盖所述环形间隙的凸缘。
10.一种转子组件,包括被安装到轴的轴承筒,轴承筒包括一对轴承,施加预负载到每个轴承的弹簧和围绕轴承的套筒,其中,套筒具有与轴的热膨胀系数大致匹配的热膨胀系数。
11.如权利要求10所述的转子组件,其中,套筒由电绝缘材料形成。
12.如权利要求10或11所述的转子组件,其中,套筒由非磁性材料形成。
13.如权利要求10至12中任一项所述的转子组件,其中,轴由软磁材料形成。
14.如权利要求10至13中任一项所述的转子组件,其中,转子组件包括间隔件,该间隔件围绕轴,分隔两个轴承且有助于轴的刚性。
15.如权利要求14所述的转子组件,其中,轴承和间隔件具有与轴的热膨胀系数大致匹配的热膨胀系数。
16.如权利要求10至15中任一项所述的转子组件,其中,转子组件包括防尘盖,该防尘盖覆盖了一个轴承中的环形间隙,防尘盖被固定到轴,该防尘盖包括从轴向外径向延伸以覆盖环形间隙的凸缘。
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- 2010-02-10 KR KR1020117020394A patent/KR20110112865A/ko not_active Application Discontinuation
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CN104364494B (zh) * | 2012-06-25 | 2017-02-22 | 博格华纳公司 | 排气涡轮增压器 |
CN103206461B (zh) * | 2013-03-21 | 2015-06-17 | 洛阳轴研科技股份有限公司 | 一种消除组配角接触球轴承高速所产生轴向热膨胀的方法 |
CN103206461A (zh) * | 2013-03-21 | 2013-07-17 | 洛阳轴研科技股份有限公司 | 一种消除组配角接触球轴承高速所产生轴向热膨胀的方法 |
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US10454336B2 (en) | 2014-05-28 | 2019-10-22 | Kingclean Electric Co., Ltd. | Rotor and processing and assembling method therefor |
WO2015180557A1 (zh) * | 2014-05-28 | 2015-12-03 | 莱克电气股份有限公司 | 一种转子及其加工装配方法 |
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WO2017016365A1 (zh) * | 2015-07-27 | 2017-02-02 | 舍弗勒技术股份两合公司 | 用于径向轴承的预紧装置及悬臂轴安装结构 |
CN106402173A (zh) * | 2015-07-27 | 2017-02-15 | 舍弗勒技术股份两合公司 | 用于径向轴承的预紧装置及悬臂轴安装结构 |
CN106402173B (zh) * | 2015-07-27 | 2019-11-05 | 舍弗勒技术股份两合公司 | 用于径向轴承的预紧装置及悬臂轴安装结构 |
CN105257583A (zh) * | 2015-11-02 | 2016-01-20 | 苏州市淞舜五金有限公司 | 一种平稳轴承 |
CN109690024A (zh) * | 2016-09-13 | 2019-04-26 | 西门子股份公司 | 用于平衡燃气轮机的压气机的转子的技术 |
US10961852B2 (en) | 2016-09-13 | 2021-03-30 | Siemens Energy Global GmbH & Co. KG | Technique for low-speed balancing of a rotor of a compressor for a gas turbine |
CN109690024B (zh) * | 2016-09-13 | 2021-11-09 | 西门子能源环球有限责任两合公司 | 用于平衡燃气轮机的压气机的转子的技术 |
CN108390499A (zh) * | 2017-02-03 | 2018-08-10 | 信浓绢糸株式会社 | 电动机及鼓风机 |
US11300130B2 (en) | 2017-06-20 | 2022-04-12 | Dyson Technology Limited | Electric machine |
US12044242B2 (en) | 2017-06-20 | 2024-07-23 | Dyson Technology Limited | Electric machine |
Also Published As
Publication number | Publication date |
---|---|
GB0903053D0 (en) | 2009-04-08 |
EP2401516A1 (en) | 2012-01-04 |
US20100215491A1 (en) | 2010-08-26 |
JP5466040B2 (ja) | 2014-04-09 |
EP2401516B1 (en) | 2018-03-07 |
GB2467966B (en) | 2013-04-03 |
KR20110112865A (ko) | 2011-10-13 |
WO2010097608A1 (en) | 2010-09-02 |
GB2467966A (en) | 2010-08-25 |
JP2010196707A (ja) | 2010-09-09 |
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